在自动模式下,楼道灯信号L与手动/自动选择开关K1、传感器信号R之间的逻辑关系为()。
A、Z=K1
B、Z=
C、Z=R
D、Z=
A、Z=K1
B、Z=
C、Z=R
D、Z=
程序段的作用是( )。
A、依次产生数值4到0
B、依次产生数值4到-1
C、依次产生数值0到4
D、依次产生数值0到5
下图源自以下哪份文件的封面( )
A、Jeannette M. Wing. Computational Thinking[J]. Communications of the ACM. 2006, 49(3).
B、Denning P J, et al. Computing as a discipline. Communications of the ACM , 1989, 32( 1)
C、President’s Information Technology Advisory Committee. Computational Science: Ensuring America’s Competitiveness[EB/OL]. http://www.nitrd.gov/pitac/reports/20050609_computational/computational.pdf, June 2005.
D、ACM / IEE E-Curriculum 2001 Task Force. Computing Curricula 2001. Computer Science. IE EE Computer Society Press and ACM Press, 2001.
A、Jeannette M. Wing. Computational Thinking[J]. Communications of the ACM. 2006, 49(3).
B、Denning P J, et al. Computing as a discipline. Communications of the ACM , 1989, 32( 1)
C、President’s Information Technology Advisory Committee. Computational Science: Ensuring America’s Competitiveness[EB/OL].http://www.nitrd.gov/pitac/reports/20050609_computational/computational.pdf, June 2005.
D、美国国家科学基金CDI 计划官方网站[EB/OL]. http://www.nsf.gov/crssprgm/cdi/
E、美国国家科学基金CPATH 计划2009 年项目申报说明 [EB/OL]. http://www.nsf.gov/cise/funding/cpath_faq.jsp#1.
F、ACM / IEE E-Curriculum 2001 Task Force. Computing Curricula 2001. Computer Science. IE EE Computer Society Press and ACM Press, 2001
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